To re-gear or not to re-gear?

Okay, so im doing a 4wd conversion to my prerunner.

I have the 2.7 L, 4 cly with an automatic transmission. I have 4.56 gears stock in the rear. Its sluggish with 265/75r16 (31"x9.5") mud tires on it and it gets terrible gas mileage like 16 mpg. But with crappy all terrains i can get like 20 mpg.

So should i stick with 4.56s or should i go with 4.88s, i may stick with having a trail set of tires and wheels and a road set. But i will probably not go any bigger than a 32"x11.5 tire size. Will probably be running armor in the future.

So 4.56s or 4.88s or 5.29s?

Thanks for the help.

 

Help please

 

I'd re-gear it to 4.88 while you're doing everything. I can't imagine a 2.7 auto being powerful enough to ride around comfortably with 32s and armor

 

There is not a big difference between 4.56 and 4.88.

 

Well you think i should go 5.29s?

 

Where would you have the gears installed? I am in the same boat as you but unsure of the expense involved.

 

I found a local guy who did my buddies truck, and charged him like $200 an axle, but my buddy bought the gears himself.

 

bump

 

Anybody else got anything to add to this?

 

Bump
Deff curious on this too cause I got the 2.7 and pushing 33's MT

 

I think you should double check whether you've really got a 4.56 stock ratio. That's pretty short gearing for a factory truck.

 

bump

 

I do have it, it is a stock ratio for toyota tacomas:

Here:

 

I know that 2005+ use 4.10 gears in the 2.7 ltr's

 

Why, why, why why why why why don't you just trade your truck in for a 4x4 and save cash?

 

It wouldnt save cash, sorry to tell ya.

 

If your gonna regear, I'll trade you my stock 4.10s for your 4.56 plus some $$ of course.